Crucible Year Peter Yuill
Archive · full record

T_292

The work as shown. Every value below comes from vae.db, the master database of the Crucible Year.

Recorded

Date
2026.05.07, day 130
Size
97 × 180 cm
Paper
S12, Red Star Mo She Special Effect Xieyi, half-raw
Inks
MB4, MB5, MB6
Phase
P2 The Switch
Shown on the site
yes (V23 rating of 5.0 or higher)
Early storage triage
SA: save, archive (Peter's early system, since retired)

Measured · V23 (v23.8)

V23 rating
7
Form
2.6
Tonal depth
2.6
Layering
2
Composition
2.8
Material and surface
1.4
Ink cover
75%
Dark share
43%
Tonal steps
6
Flaws named by the reads
other 10, water stain 4
The V23 rating runs from 1 to 9, with 5 the middle of this body of work. It is the engine's reading, and the reference the archive is measured against.

Older engine

V7
8
From an earlier engine (V7). Its scale differs from V23's, so it is only ever compared with other readings by the same engine.

How the number was made

Read by the Visual Analysis Engine, version 23.8, on 2026.10.06: measured by code, then read 5 times by Claude Opus 5.5 against three reference paintings (R1 to R3), each read independent of the others. How the engine works.

WHAT THE CODE SEES

Three views of one sheet.

Left, the photograph. Centre, the tone stretch the model is shown beside it: the darkest 45% of tones spread over the whole range, so flat black, banding and stains show. Right, every pixel as the measuring code classes it: cyan black ink, deep teal translucent grey, stone the palest ink, near black bare paper.

T_292T_292, tone-stretchedT_292, classed by brightness
75%of the sheet carries ink
Black 43%Grey 40%Light 17% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

6 families of tone.

Every inked pixel's brightness in 64 bins, smoothed; each circled peak holds at least 4% of the ink. Life inside the black: 0.072 (under 0.045 reads as flat).

0.300.75123456 BLACK INK TRANSLUCENT GREYS PALEST INK, 0.88 LUMINANCE OF EVERY INKED PIXEL, 64 BINS. PAPER (ABOVE 0.88) IS LEFT OUT.
FIVE READS

Five reads, agreeing on 1 of 5 qualities.

Each quality placed on its ladder by each read, and the mean the engine keeps. Where reads differ, they differ by one rung; close calls resolve down.

READ 1READ 2READ 3READ 4READ 5MEAN
Form2BUILT3FLUENT3FLUENT2BUILT3FLUENT2.6
Tonal depth3DEEP3DEEP3DEEP2MODELLED2MODELLED2.6
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition3COMMANDING2WORKING3COMMANDING3COMMANDING3COMMANDING2.8
Material and surface2SOUND2SOUND1FLAWED1FLAWED1FLAWED1.4

READ 1, IN ITS OWN WORDS

“A single strong crescent sweep with banded tonal life and a shaped white void. The arc's blunt right terminal, the modest layering and the creases in the paper keep it near the archive average, a little above R2.”

Form · BUILT

The great arc from upper left to right holds its walls and follows the stroke, but the squared block at the right end is blunt and slab-like.

WEAKEST Stiff rectangular block terminating the arc at right

STRONGEST Main sweeping black arc following the brush travel

Tonal depth · DEEP

Bristle-track bands and stepped density run through the dark arc, there are graded greys in the lower wash, and six tonal steps. The darkest right end is the flattest area.

WEAKEST Densest black at right end of arc nearly flat

STRONGEST Banded bristle arcs running inside the dark sweep

Layering · LEGIBLE

There are about three passes: a grey sweep, the black arc and dry-brush ends. The overlaps are legible at the upper right and lower right, but the sequence does not build depth across the whole sheet.

WEAKEST Cloudy grey wash under arc reads indistinctly

STRONGEST Black arc over translucent grey band, upper right

Composition · COMMANDING

One arc carries the eye from the left edge, across the top and down to the lower right. The white void below it is a shaped form that works as hard as the ink. The scattered left edge is weaker.

WEAKEST Scattered splinter marks at left edge

STRONGEST Crescent sweep wrapping a shaped white void

Material and surface · SOUND

The ink is controlled and dry-brush is used at the right. Crease lines cross the dark mass in the top centre, and a slightly cloudy grey sits under the arc. Both are modest.

WEAKEST Paper creases across dark arc interior

STRONGEST Dry-brush feathering at lower right arc ends

FLAWS

3 distinct places, 1 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 3 distinct places, 14 mentions in all across 5 reads; the number in each ninth is how many times a flaw was named there. Reads agreeing on a place strengthen the evidence for one flaw; they do not multiply it. A major flaw holds Material and surface at rung 1.

5 × OTHER · MAJOR“paper crease lines crossing the dark arc”4 × WATER STAIN“cloudy pale grey wash beneath the arc, centre”5 × OTHER“stray ink drops near bottom right edge”WATER STAINOTHERMAJOR
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 1 principal ink mass traced (cyan), 6 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 14 edge segments, 43% crisp, 21% soft or bloomed, 36% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

6 steps: not applied
RULE 2A major flaw

Material held at rung 1. Mild waves in the unmounted paper are never a flaw.

3 major flaws: applied
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.4
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 7.0.

Engine v23.8, 5 reads. Fixed arithmetic, the same for every painting; the constants were set on 24 randomly chosen paintings so the median sheet scores 5. The scale is relative to this archive, not to painting in general, and a difference of less than half a point between two paintings is noise.

MEAN RUNG2.28(2.6 + 2.6 + 2.0 + 2.8 + 1.4) ÷ 5
→
RAW5.561 + 2 × 2.28
→
RATING7.05 + 2.086 × (5.56 − 4.60)